Water-fluorine chains in (18-crown-6)·NH4F·3H2O hydrate

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作者
K. A. Udachin
J. Lipkowski
机构
[1] National Research Council of Canada,Steacie Institute for Molecular Sciences
[2] Polish Academy of Sciences,Institute of Physical Chemistry
[3] Kasprzaka 44,undefined
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关键词
water; hydrate; hydrogen bond; crown-ether;
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摘要
The structure and composition of (18-crown-6)·NH4F·3H2O hydrate were determined from single crystal XRD data at 173 K. The compound is monoclinic P21/n with unit cell parameters a = 11.913(1) Å, b = 7.928(1) Å, c = 20.679(3) Å; β = 105.14(1)°. The ammonium cation is included in the crown-ether and forms three hydrogen bonds to oxygen atoms. The water molecules and the fluorine ions connected by hydrogen bonds form chains consisting of square faces and running parallel to the b axis of the crystal.
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页码:S84 / S87
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